📝 Event: 2025-06-19_stage_backlash_adjustment

📊 Report Overview

Event Metadata

Record Type
Maintenance Event

Reason / Suite
Problem

Service Provider
internal

Instrument
scope-testx1

Maintenance Action

Reason Details:
XY tiling jobs showed 1-2 frame overlap mismatch near the right edge, consistent with increasing stage backlash.

Action Details:
Re-homed stage axes, tightened X-axis coupling set screw, recalibrated pixel size/step conversion in acquisition software, and validated with a 6x6 tile phantom run.

Status After Fix:
LIMITED

Additional Notes

Imaging resumed same afternoon, but instrument kept in limited mode for high-precision tiling only.

📄 Raw YAML Ledger

View 2025-06-19_stage_backlash_adjustment.yaml

schema_version: 1
record_type: maintenance_event

maintenance_id: "maint_scope-testx1_20250619_stage_backlash_adjustment"
microscope: "scope-testx1"

service_provider: "internal"
company: "AIC Turku Microscopy Core"
contact: "On-call staff: Mikko Salonen"
reference: "INT-CORE-2025-233"

started_utc: "2025-06-19T12:10:00Z"
ended_utc: "2025-06-19T14:00:00Z"

reason: "problem"
reason_details: >
  XY tiling jobs showed 1-2 frame overlap mismatch near the right edge,
  consistent with increasing stage backlash.

action: "align"
action_details: >
  Re-homed stage axes, tightened X-axis coupling set screw,
  recalibrated pixel size/step conversion in acquisition software,
  and validated with a 6x6 tile phantom run.

microscope_status_after: "limited"
downtime_hours: 1.8

related_qc:
  - "qc_scope-testx1_20250619T1110Z_stagegrid_v1"
  - "qc_scope-testx1_20250620T0745Z_stagegrid_v1"

attachments:
  - "maintenance/events/scope-testx1/2025/attachments/2025-06-19_stage_validation.csv"

tags: ["stage", "alignment", "tiling", "internal"]

followup: >
  Keep tile overlap at 12% minimum until next full vendor mechanical inspection.
next_due_date: "2025-09-01"

notes: >
  Imaging resumed same afternoon, but instrument kept in limited mode for high-precision tiling only.